US5000283A - Front seat aranged in a two-door motor vehicle - Google Patents

Front seat aranged in a two-door motor vehicle Download PDF

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Publication number
US5000283A
US5000283A US07/486,369 US48636990A US5000283A US 5000283 A US5000283 A US 5000283A US 48636990 A US48636990 A US 48636990A US 5000283 A US5000283 A US 5000283A
Authority
US
United States
Prior art keywords
backrest
fork latch
detent pawl
fork
locking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US07/486,369
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English (en)
Inventor
Karl-Heinz Krieg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daimler Benz AG filed Critical Daimler Benz AG
Assigned to DAIMLER BENZ AG reassignment DAIMLER BENZ AG ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: KRIEG, KARL-HEINZ
Application granted granted Critical
Publication of US5000283A publication Critical patent/US5000283A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/20—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being tiltable, e.g. to permit easy access

Definitions

  • the invention relates to an adjustable front seat arranged in a two-door motor vehicle and having a backrest which has a forward-tilting and an inclination-adjusting movement that takes place about a single axis. Locking of the backrest is brought about by means of a fork latch engaging a catch pin. The locking of the backrest is cancelled by pivoting a spring-loaded detent pawl away from the fork latch.
  • a backrest which can be pivoted in this general way and which is secured in its position of use is known from German Offenlegungsschrift 2,360,627. This structure gives no guarantee that after a forward-pivoting seat operation, the backrest will be secured once again in its position of use. Non-securing can easily occur when the backrest is not pivoted back completely, or before reaching its rear position, it comes to bear against an obstruction (for example, against a luggage item placed on the rear seats). In the event of a sharp deceleration of the vehicle, an unsecured backrest, which can also be subjected to stress by a passenger sitting behind it, would then exert a load on the back of the seat user. This is especially serious if the backrest receives the upper belt articulation or belt deflection point of a seat belt system.
  • the object of the instant invention is to effectively prevent the backrest from moving towards the seat user under load, even before the motoring trip begins and even when the backrest cannot return into its secured position of use because of an obstacle.
  • the invention provides that in an adjustable front seat arranged in a two-door motor vehicle that has a backrest capable of forward-tilting and inclination-adjusting movements about a single axis, locking of the backrest occurs by means of a fork latch engaging with a catch pin and locking is cancelled by the pivoting of a spring-loaded detent pawl away from the fork latch.
  • the detent pawl falls into the fork latch and the detent pawl interacts with a switch member so that when the detent pawl has not fallen in to the fork latch, the switch which, with an associated door closed and an ignition key inserted, activates a backrest-pivoting device to pivot the backrest forwards while the momentary backrest inclination is maintained.
  • Such pivoting of the backrest causes fork latch, which is supported against the catch pin, to pivot about the pin until the detent pawl falls into the fork latch, and the signal is thus stopped.
  • each detent pawl falls into its associated fork latch and each detent pawl interacts with its switch member (when the detent pawl has not fallen into its fork latch) to generate a signal which, with the associated door closed and the ignition key inserted, triggers a visual and/or acoustic alarm.
  • the backrest-pivoting device When two signals occur as a result of neither detent pawl engaging its respective fork latch, the backrest-pivoting device is activated for effecting pivoting the backrest forwards, while the momentary backrest inclination is maintained, to pivots the fork latches, which are supported against the respective associated catch pins, about their catch pin until at least one of the detent pawls falls into the fork latch. Then one of the signals stops.
  • FIG. 1 shows a seat frame with a backrest-pivoting and locking mechanism
  • FIG. 2 shows the backrest-pivoting and locking mechanism in the locked state and on a larger scale taken from the vehicle drivers side.
  • the belt-reeling device 6 of the shoulder belt of the three-point belt system is arranged in a profiled upward-projecting bearer 7 which forms an integral part of the backrest frame 3 at its upper end adjacent vertically displacable headrest carrier 8.
  • the displacably headrest carrier 8 carries an upper support for shoulder-belt.
  • adjusting devices for raising the front side of the seat cushion
  • a longitudinal-adjustment device on the seat-cushion frame of which an adjusting spindle 9 is indicated.
  • a rear inclination-adjusting device 11 on the seat-cushion frame 2 which acts on two setting elements 10 (only one of which is partially visible) for simultaneously causing a change of height when the front inclination-adjusting device (not shown) is actuated.
  • the non-shown setting element 10 appears hidden in FIG. 1 and is located on the opposite latch side of the seat in a complimentary manner.
  • Each setting element 10 engages at its top on a catch pin 12 which is connected to the seat-cushion frame 2.
  • a fork latch 13 of a backrest-locking mechanism 14 locking engages pin 12.
  • a detent pawl 16 loaded by spring 15 falls into the fork latch 13.
  • the detent pawl 16 can be released by a remote actuation means 17 which, together with a further remote actuation means 18 assigned to the detent pawl of a duplicate other side locking mechanism (not shown), leads to a release lever 19 attached to the bearer 7.
  • a backrest-pivoting device 20 is secured to the backrest frame 3 and consists of a drive motor 21, the rotational movement of which is transmitted to a variable gear 22 and via a flexible shaft 23 to a further variable gear, covered by the bearer 7 and assigned to second backrest-locking mechanism on the opposite lateral side of the seat.
  • An adjusting rod 24 projects from the variable gear 22, held on the backrest frame 3, and is articulated on the backrest-locking mechanism 14.
  • each detent pawl 16 Assigned to each detent pawl 16 is a switch member 25 which is designed as a limit switch and which has its contact closed when the detent pawl 16 has fallen correctly into the fork latch 13.
  • a first electric wire line set 26 leads from the visible switch member 25 and a second line set 27 from a switch member on the opposite side to a central control unit 28.
  • Further center control unit 28 wire inputs are designated by 29 and 30 and they lead from an ignition lock and a door-contact switch of the associated door.
  • Wire output 31 from the center control 28 serves for activating the drive motor 21.
  • a buzzer 33 connect, activated by a wire line 32 connected to the central control 28 as well as a warning light 35 connected via a wire line 34.
  • the backrest frame 3 is not pivoted back properly, with the result that the detent pawl 16 does not fall into the fork latch 13 on the two locking 15 mechanisms 14 located opposite one another, at least one of the two switch members 25 will continue to remain open. If the associated vehicle door is closed and the ignition key inserted, in the above-described initial position, both the buzzer 33 and the warning light 35 are actuated. In addition, the backrest-pivoting device 20 is activated with the effect of a forward pivoting to extend adjusting rod 24. Without the inclination of the backrest frame 3 changing, the fork latch 13, supported against the catch pin 12, pivots in the counter-clockwise direction (about the axis designated by "B" in FIG. 2), until the detent pawl 16 falls into stops latch 13.
  • the signal of the associated switch member 25 stops.
  • the backrest-pivoting device 20 still remains switched on for approximately one second. Should locking occur on only one side despite this time lag of limited time duration, the actuation of the backrest-pivoting device 20 is cut off. In such an instance, however, at least the warning light 35 signals the failure to lock, or of a fault in the electrical transmission path. Thus a warning that this fault should be investigated as quickly as possible is provided.
  • the warning light 35 can be activated directly by the switch member 25. This will provide a first warning threshold when the backrest locking mechanism 14 is released and the ignition switched on. Since here the warning light 35 lights up even with the door open. An acoustic warning via the buzzer 33 can then additionally occur when the door and therefore also the associated door-contact switch are closed. A second warning threshold is obtained thereby.

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)
  • Body Structure For Vehicles (AREA)
US07/486,369 1989-03-04 1990-02-28 Front seat aranged in a two-door motor vehicle Expired - Fee Related US5000283A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3907075 1989-03-04
DE3907075A DE3907075C1 (enrdf_load_stackoverflow) 1989-03-04 1989-03-04

Publications (1)

Publication Number Publication Date
US5000283A true US5000283A (en) 1991-03-19

Family

ID=6375594

Family Applications (1)

Application Number Title Priority Date Filing Date
US07/486,369 Expired - Fee Related US5000283A (en) 1989-03-04 1990-02-28 Front seat aranged in a two-door motor vehicle

Country Status (6)

Country Link
US (1) US5000283A (enrdf_load_stackoverflow)
JP (1) JPH02270646A (enrdf_load_stackoverflow)
DE (1) DE3907075C1 (enrdf_load_stackoverflow)
FR (1) FR2643861B1 (enrdf_load_stackoverflow)
GB (1) GB2231258B (enrdf_load_stackoverflow)
IT (1) IT1239808B (enrdf_load_stackoverflow)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5246271A (en) * 1990-04-04 1993-09-21 Bertrand Faure Automobile Vehicle seats with built-in safety belt
US5292178A (en) * 1992-07-15 1994-03-08 General Motors Corporation Front seat for two-door vehicle
US5306073A (en) * 1992-02-24 1994-04-26 Itt Corporation High strength motor vehicle seat recliner
US5356202A (en) * 1991-03-01 1994-10-18 Tachi-S Co. Ltd Arrangement for mounting a headrest in seat
US5362132A (en) * 1991-02-22 1994-11-08 Hoover Universal, Inc. Vehicle seat assembly with structural seat back to accommodate seat belt loads applied to seat back
US5362129A (en) * 1992-09-29 1994-11-08 Tachi-S Co., Ltd. Structure of a casing for headrest stay
US5439272A (en) * 1989-12-26 1995-08-08 Bertrand Faure Automobile Seat for a vehicle provided with a safety belt with fixation points embarked on the armature of the seat
US5664838A (en) * 1995-03-30 1997-09-09 Bertrand Faure Equipements Sa Vehicle seat including a pivoting backrest mounted by means of a device capable of withstanding high torques
US6131999A (en) * 1999-11-22 2000-10-17 Ford Motor Company Folding vehicle seat assembly
US6767055B1 (en) 2002-03-11 2004-07-27 Bostrom Seating, Inc. Vehicle seat frame and belt assembly

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4238549C2 (de) * 1992-11-14 1997-06-12 Daimler Benz Ag Kraftfahrzeugsitz

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2945722A (en) * 1958-06-23 1960-07-19 Gen Motors Corp Seat adjuster
US3387885A (en) * 1967-04-20 1968-06-11 Ford Motor Co Seat back latch mechanism
US3817571A (en) * 1973-05-29 1974-06-18 Ford Motor Co Automatic seat back latch release
DE2360627A1 (de) * 1972-12-06 1974-06-20 Mantovani Autositz mit klappbarer rueckenlehne mit verstellbarer neigung
DE2926800A1 (de) * 1979-07-03 1981-02-12 Volkswagenwerk Ag Einrichtung zur anzeige der nicht ordnungsgemaessen einrastung einer lehnenverriegelungsvorrichtung
DE3046888A1 (de) * 1980-12-12 1982-07-15 Keiper Automobiltechnik Gmbh & Co Kg, 5630 Remscheid Gelenkbeschlag fuer sitze, insbesondere kraftfahrzeugsitze
DE3506540A1 (de) * 1985-02-25 1986-08-28 P.A. Rentrop, Hubbert & Wagner Fahrzeugausstattungen Gmbh & Co Kg, 3060 Stadthagen Gelenkbeschlag fuer nach vorn umlegbare rueckenlehnen von kraftfahrzeugsitzen
US4707010A (en) * 1985-10-25 1987-11-17 Canadian A.S.E. Limited Inertial latching mechanism for seat assemblies
US4795213A (en) * 1985-02-13 1989-01-03 Fisher Dynamics Corporation Gear operated seat recliner with redundant positioning
US4904003A (en) * 1987-01-23 1990-02-27 Ikeda Bussan Co., Ltd. Latch device for inclinable back rest cushion mounted in seatback
US4909571A (en) * 1988-09-12 1990-03-20 Hoover Universal, Inc. Vehicle seat with inertial latch assembly

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3655240A (en) * 1970-07-20 1972-04-11 Essex International Inc Motor actuated seat back latch release mechanism
US3788685A (en) * 1972-04-17 1974-01-29 Mccord Corp Bowden cable latch release mechanism
DE2641587C2 (de) * 1976-09-16 1983-12-01 Keiper Automobiltechnik Gmbh & Co Kg, 5630 Remscheid Gelenkbeschlag für Sitze, insbesondere Kraftfahrzeugsitze
US4076309A (en) * 1977-01-13 1978-02-28 Lear Siegler, Inc. Seat recliner including adjustment mechanism and latch

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2945722A (en) * 1958-06-23 1960-07-19 Gen Motors Corp Seat adjuster
US3387885A (en) * 1967-04-20 1968-06-11 Ford Motor Co Seat back latch mechanism
DE2360627A1 (de) * 1972-12-06 1974-06-20 Mantovani Autositz mit klappbarer rueckenlehne mit verstellbarer neigung
US3817571A (en) * 1973-05-29 1974-06-18 Ford Motor Co Automatic seat back latch release
DE2926800A1 (de) * 1979-07-03 1981-02-12 Volkswagenwerk Ag Einrichtung zur anzeige der nicht ordnungsgemaessen einrastung einer lehnenverriegelungsvorrichtung
DE3046888A1 (de) * 1980-12-12 1982-07-15 Keiper Automobiltechnik Gmbh & Co Kg, 5630 Remscheid Gelenkbeschlag fuer sitze, insbesondere kraftfahrzeugsitze
US4795213A (en) * 1985-02-13 1989-01-03 Fisher Dynamics Corporation Gear operated seat recliner with redundant positioning
DE3506540A1 (de) * 1985-02-25 1986-08-28 P.A. Rentrop, Hubbert & Wagner Fahrzeugausstattungen Gmbh & Co Kg, 3060 Stadthagen Gelenkbeschlag fuer nach vorn umlegbare rueckenlehnen von kraftfahrzeugsitzen
US4707010A (en) * 1985-10-25 1987-11-17 Canadian A.S.E. Limited Inertial latching mechanism for seat assemblies
US4904003A (en) * 1987-01-23 1990-02-27 Ikeda Bussan Co., Ltd. Latch device for inclinable back rest cushion mounted in seatback
US4909571A (en) * 1988-09-12 1990-03-20 Hoover Universal, Inc. Vehicle seat with inertial latch assembly

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5439272A (en) * 1989-12-26 1995-08-08 Bertrand Faure Automobile Seat for a vehicle provided with a safety belt with fixation points embarked on the armature of the seat
US5246271A (en) * 1990-04-04 1993-09-21 Bertrand Faure Automobile Vehicle seats with built-in safety belt
US5362132A (en) * 1991-02-22 1994-11-08 Hoover Universal, Inc. Vehicle seat assembly with structural seat back to accommodate seat belt loads applied to seat back
US5356202A (en) * 1991-03-01 1994-10-18 Tachi-S Co. Ltd Arrangement for mounting a headrest in seat
US5306073A (en) * 1992-02-24 1994-04-26 Itt Corporation High strength motor vehicle seat recliner
US5292178A (en) * 1992-07-15 1994-03-08 General Motors Corporation Front seat for two-door vehicle
US5362129A (en) * 1992-09-29 1994-11-08 Tachi-S Co., Ltd. Structure of a casing for headrest stay
US5664838A (en) * 1995-03-30 1997-09-09 Bertrand Faure Equipements Sa Vehicle seat including a pivoting backrest mounted by means of a device capable of withstanding high torques
US6131999A (en) * 1999-11-22 2000-10-17 Ford Motor Company Folding vehicle seat assembly
US6767055B1 (en) 2002-03-11 2004-07-27 Bostrom Seating, Inc. Vehicle seat frame and belt assembly

Also Published As

Publication number Publication date
FR2643861B1 (fr) 1992-08-28
JPH02270646A (ja) 1990-11-05
IT1239808B (it) 1993-11-15
GB9004292D0 (en) 1990-04-18
DE3907075C1 (enrdf_load_stackoverflow) 1990-09-13
IT9047690A0 (it) 1990-02-28
FR2643861A1 (fr) 1990-09-07
GB2231258B (en) 1992-05-13
IT9047690A1 (it) 1990-09-05
GB2231258A (en) 1990-11-14

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Owner name: DAIMLER BENZ AG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:KRIEG, KARL-HEINZ;REEL/FRAME:005248/0507

Effective date: 19900216

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Effective date: 20030319